A composite transform file contains multiple transforms. The transform that is named as “moving-Forward-compositetx” is a simple grid transform that contains the total displacement for each point of the fixed image. You can see this in the “Information” section in Transforms module:
You can create a composite transform by hardening the warping transform on the bulk affine transform. The information section will look like this and the “Split” button will appear that allows the user to split the transform to its components:
